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This aesthetic specimen shows a very rich group of acicular cyanotrichite aggregates, with a deep blue color and brilliance. They're accompanied by green globular aggregates of parnauite. Also we can enjoy groups of green-blue hexagonal chalcophyllite crystals, perfectly defined. The matrix is covered with different iron arsenates. A piece of a classic French mine where today is impossible to get specimens, and less of this quality.
Botryoidal aggregates formed by goethite microcrystals, with a delicate velvety appearance with deep brown to black color zoning. In section we can observe the radial arrangement of goethite crystals. The matrix is a mixture of goethite with some siderite rhombohedrons. These specimens are from a find in the Mont-Roc mine, that is known for the French mineralogy for its brilliant goethites and fluorite.
A rich group of quartz crystals, brilliant, transparent and with a very delicate and aesthetic smoky tone. They show well-defined prism and complex forms in top faces. They are disposed on a rocky matrix with albite. Talèfre glacier is located in the heart of the Mont Blanc massif.
Globular growths of barrel-shaped orange yellow to green crystals with a good luster. The crystals are on a matrix with small crystals of quartz.
In this floater specimen we can observe a group of quartz crystals, two of them clearly dominant, with well defined faces and edges. We see a well-developed prism with rhombohedral terminal and trapezohedron faces. Transparence and brilliance are both excellent and with a very uniform smoky tone.
In this specimen we can observe a group of quartz crystals with well defined faces and edges. We see a well-developed prism with rhombohedral terminal and trapezohedron faces. Transparence and brilliance are both excellent and with a very uniform smoky tone. It is not easy to find specimens from this Alpine quartz locality.
Note: Le Règne Minèral. Minèralogie du Massif du Mont-Blanc. Hors Sèrìe V, 1999.
A very aesthetic group of very sharp quartz crystals with a uniform smoky tone, more intense in terminal rhombohedron, well developed prism followin main axis. From a classic Mont-blanc area for this species.
In this floater specimen we can observe a rich group of quartz crystals, one of them dominant, with well defined faces and edges. We see a well-developed prism with rhombohedral terminal and trapezohedron faces. Transparence and brilliance are both excellent and with a very uniform smoky tone. It is not easy to find specimens from this Alpine quartz locality.
Note: Le Règne Minèral. Minèralogie du Massif du Mont-Blanc. Hors Sèrìe V, 1999.
Very rich group of azurite crystals, with deep-blue color and very bright. Disposed on the matrix as isolated crystals or in rosettes. Good luster and transparence. Observed under the microscope they show an excellent composition. This specimen is from a classic French mine: Cap Garonne. This mines are well known for the rich paragenesis of rare species. Today it is impossible to collect specimens as closed as mining museum.
Druse formed by a rich group of cubic fluorite crystals with a yellowish tone, with geometrical zoning color, more violet in some outer edges. Noted for its definition. Translucent and dull luster. This deposit has some similarities with those of Asturias in Spain. A representative and quality specimen for this not well represented in collections French locality.
Botryoidal aggregates formed by goethite microcrystals, with a delicate velvety appearance with color zoning that varies between brown garnet to dark gray. In section we can observe the radial arrangement of goethite crystals. The matrix is a mixture of goethite with some siderite rhombohedrons and quartz. These specimens are from a recent find in the Mont-Roc mine, that is known for the French mineralogy for its brilliant goethites and fluorite.
A very aesthetic stalactitic specimen formed by a rich group of metatorbernite crystals. They present polysynthetic and echeloned growth of well-defined tetragonal crystals, with the characteristic green color. Under LW-UV we can observe the presence of a greenish-yellow intense fluorescence that indicates the presence of other species. SEM-EDS analysis have characterized this species as meta-autunite. We can say that the metatorbernite species is replacing the meta-autunite, as we can observe as a color gradation in some tabular crystals or in fresh fracture. This specimen come from late 90's finds in this classic French mine. Ex-col. A. Pouget.
Both, meta-autunite and metatorbernite, are dehydrated phases of the autunite and torbernite. The loss of water molecules, those are present in the crystal structure of these species, is a common fact when the specimen is extracted from the mine.
A stalactitic shape specimen formed by metatorbernite crystals. They present polysynthetic growth of tetragonal crystals, with the characteristic green color. Under LW-UV we can observe the presence of a greenish-yellow intense fluorescence that indicates the presence of other species. SEM-EDS analysis have characterized this species as meta-autunite. We can say that the metatorbernite species is replacing the meta-autunite, as we can observe as a color gradation in some tabular crystals or in fresh fracture. We will send analysis to the buyer. This specimen come from late 90's finds in this classic French mine. Ex-col. A. Pouget.
Both, meta-autunite and metatorbernite, are dehydrated phases of the autunite and torbernite. The loss of water molecules, those are present in the crystal structure of these species, is a common fact when the specimen is extracted from the mine.
A very aesthetic specimen formed by a rich group of metatorbernite crystals. They present polysynthetic and echeloned growth of well-defined tetragonal crystals, with the characteristic green color. Under LW-UV we can observe that the yellow crystals show a greenish-yellow intense fluorescence. SEM-EDS analysis have characterized this species as meta-autunite. We can say that the metatorbernite species is replacing the meta-autunite, as we can observe as a color gradation in some tabular crystals or in fresh fracture. We will send analysis to the buyer. This specimen come from late 90's finds in this classic French mine. Ex-col. A. Pouget.
Both, meta-autunite and metatorbernite, are dehydrated phases of the autunite and torbernite. The loss of water molecules, those are present in the crystal structure of these species, is a common fact when the specimen is extracted from the mine.
A very aesthetic specimen formed by a rich group of metatorbernite crystals. They present polysynthetic and echeloned growth of well-defined tetragonal crystals, with the characteristic green color. Under LW-UV we can observe the presence of a greenish-yellow intense fluorescence that indicates the presence of other species. SEM-EDS analysis have characterized this species as meta-autunite. We can say that the metatorbernite species is replacing the meta-autunite, as we can observe as a color gradation in some tabular crystals or in fresh fracture. We will send analysis to the buyer. This specimen come from late 90's finds in this classic French mine. Ex-col. A. Pouget.
Both, meta-autunite and metatorbernite, are dehydrated phases of the autunite and torbernite. The loss of water molecules, those are present in the crystal structure of these species, is a common fact when the specimen is extracted from the mine.
A very aesthetic specimen formed by a rich group of metatorbernite crystals. They present polysynthetic and echeloned growth of well-defined tetragonal crystals, with the characteristic green color. Under LW-UV we can observe the presence of a greenish-yellow intense fluorescence that indicates the presence of other species. SEM-EDS analysis have characterized this species as meta-autunite. We can say that the metatorbernite species is replacing the meta-autunite, as we can observe as a color gradation in some tabular crystals or in fresh fracture. We will send analysis to the buyer. With smoky quartz as host rock and matrix. This specimen come from late 90's finds in this classic French mine. Ex-col. A. Pouget.
Both, meta-autunite and metatorbernite, are dehydrated phases of the autunite and torbernite. The loss of water molecules, those are present in the crystal structure of these species, is a common fact when the specimen is extracted from the mine.
A very aesthetic specimen formed by a rich group of metatorbernite crystals. They present polysynthetic and echeloned growth of well-defined tetragonal crystals, with the characteristic green color. Under LW-UV we can observe the presence of a greenish-yellow intense fluorescence that indicates the presence of other species. SEM-EDS analysis have characterized this species as meta-autunite. We can say that the metatorbernite species is replacing the meta-autunite, as we can observe as a color gradation in some tabular crystals or in fresh fracture. We will send analysis to the buyer. This specimen come from late 90's finds in this classic French mine. Ex-col. A. Pouget.
Both, meta-autunite and metatorbernite, are dehydrated phases of the autunite and torbernite. The loss of water molecules, those are present in the crystal structure of these species, is a common fact when the specimen is extracted from the mine.
Very exceptional group of bastnäsite-(Ce) crystals. Good size, defined faces and edges, transparence, brilliance... And perfectly disposed on a dolomite crystal matrix with talc. A rare opportunity to obtain a top quality specimen of this REE carbonate from this classic French talc quarry.
Very exceptional group of bastnäsite-(Ce) crystals. Good size, defined faces and edges, transparence, brilliance... And perfectly disposed on a dolomite crystal matrix. A rare opportunity to obtain a top quality specimen of this REE carbonate from this classic French talc quarry.
This specimen shows stalactític aggregates of rhodochrosite with a pink color. They are accompanied by brilliant botryoidal kentrolite, with a deep black color. It is a rare lead and manganese silicate. Nice specimen for the species and dedicated to systematic and French collectors.
This specimen is showing a very rich group of allanite-(Ce) crystals, disposed randomly on a cavity covered by dolomite and calcite. This mineral with Rare Earth Elements (REE) is a classic for this French quarry, in the Pyrenees. It shows very elongated prismatic crystals, with transparence and brown to toasted honey tones.
In this specimen we can observe a group of quartz crystals, one of them dominant, with well defined faces and edges. We see a well-developed prism with rhombohedral terminal faces and a possible small trapezohedron face. Transparence and brilliance are both excellent and with a very uniform smoky tone. It is not easy to find specimens of alpine smoky quartz at reasonable prices, without nicks, and less with this size.
Group of very sharp flattened parallel growth of quartz crystals. Very transparent, with an excellent brilliance, transparence and with a visible "faden" growth that crosses it tip to tip.
It comes from a very recent find in the alpine valley of Saint-Jean-de-Maurienne, in France, near Italy and they could be considered between the best faden quartz crystals in Europe.
Group of very sharp flattened parallel growth of quartz crystals. Very transparent, with an excellent brilliance, transparence and with a visible "faden" growth that crosses it tip to tip.
It comes from a very recent find in the alpine valley of Saint-Jean-de-Maurienne, in France, near Italy and they could be considered between the best faden quartz crystals in Europe.
Group of a parallel growth of very sharp flattened quartz crystals. Very transparent, with an excellent brilliance, transparence and with a visible "faden" growth that crosses it tip to tip.
It comes from a very recent find in the alpine valley of Saint-Jean-de-Maurienne, in France, near Italy and they could be considered between the best faden quartz crystals in Europe.